Coagulation electrodes are described which are intended for the thermal coagulation of biological tissue by means of high-frequency electrical alternating current. The area adjoining the contact surface of the coagulation electrode is designed as a heat sink with such a great heat capacity value and ...

A radio frequency coagulation instrument has two concentric tubular feedls (15, 16) with coagulation electrodes (13, 14) at their end. The tubular feedlines (15, 16) are simultaneously used to supply the radio frequency current to the coagulation electrode (13, 14) and for the supply and removal of ...

A monopolar electrosurgical instrument for excising polyps from the gastrointestinal tract comprises an elongated flexible plastic tube having a first monopolar electrode mounted a small predetermined distance from the distal end of the tubular member and a conductive wire loop affixed to a pull-wir ...

An electrode assembly for a resectoscope includes, a cutting electrode with a loop distal tip and a coagulation electrode with a loop distal tip. A support frame connects the cutting and coagulation electrodes to an energy source which supplies energy from the energy source to the electrodes. The co ...

An electrosurgical instrument for sequentially cutting and coagulating tissue, including methodology for electrosurgical procedures incorporating principles of the inventive instrument. The instrument comprises a cutting electrode connectable to a first power source having a first power signal suffi ...

An electrosurgical coagulation electrode to accomplish direct cyclocoagulation for treating glaucoma. To this end, the electrode is a flat, thin, slightly-flexible electrically-conductive member coated with an electrically-insulating coating over all but a small exposed area at one surface of the el ...

The present invention provides devices, systems, and methods for using a single electrode structure for both resection and ablation. Generally, the electrode structures of the present invention comprise fixed wire shapes which avoid the complexity and binding that often result when known rolling abl ...

An electrosurgical instrument for use in combination with an endoscope for cutting tissue and cauterizing/coagulating the resulting wound area is described. The instrument comprises an elongated flexible tubular member having a proximal end, a distal end, and plural lumens extending therebetween. Af ...

The handpiece (8) comprises a nozzle (24) from which a liquid jet (42) emerges at high pressure via an end-piece (8). According to the invention, the end-piece (8) is designed as an active coagulation electrode of a HF surgery apparatus (10). This electrode can be both a monopolar as well as a bipol ...

An electrode assembly for a resectoscope includes, a cutting electrode with a loop distal tip and a coagulation electrode with a loop distal tip. A support frame connects the cutting and coagulation electrodes to an energy source which supplies energy from the energy source to the electrodes. The co ...